From mboxrd@z Thu Jan  1 00:00:00 1970
From: adelias <adelias@freemail.gr>
Subject: XMOS UAC2
Date: Thu, 09 Aug 2012 22:33:08 +0300
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I have an XMOS Reference board with the latest firmware (v3.3). With 
ALSA 1.0.23 it enumerates and functions properly. With ALSA 1.0.25 it 
appears to enumerate properly after boot up but will not output sound. 
Removing and reinserting snd-usb-audio with modprobe doesn't help. Only 
after I reset it by unpluging and repluging the usb cable will it 
function as it should.